428 ENTOMOLOGICAL NEWS. [Nov., ’08 
ocerus pusillus not common in any other locality visited by me 
was frequently seen, and Haltica rufa was so abundant about 
the roots of grass as to be a nuisance. An unknown Acalles 
was hailed with delight when the first specimen appeared, but 
it soon grew rather common and proved to be ventrosus. 
Another weevil was abundant, its brassy hue shining in the 
sun as I stirred it up from the soil, Tyloderma aereum. Two 
or three species of Tachys, many small Staphylinids and scores 
of Limnichus nitidulus were taken thus. Several specimens 
of a carabid new to me with odd deeply pitted elytra proved 
to be Selenophorus fossulatus and I took three specimens of 
Hydrochus rugosus which I had never found before. Some- 
times a pupa was found in the soil, or the whitish grub of some 
scarabid beetle. So my search was not a monotonous one 
but full of interest and excitement and I shall never regret 
the long hours I spent so near the earth itself in my hunt for 
Saldoida. 
A new Dragonfly (Odonata) belonging to the Cor- 
dulinae, and a Revision of the Classifi- 
cation of the Subfamily. 
By E. B. WILLIAMSON. 
(Plate XVIII.) 
In the past, two groups of Cordulinae have been recognized 
and defined by the following characters: crossed or free super- 
triangles, and united (stalked) or distinct (separate) sectors 
of the arculus. These groups and the sub-groups are familiar 
to students of Odonata and need not be discussed here, except 
to call attention to the fact that the classification resulting 
from the use of these characters has been an altogether artificial 
one, resulting in an unnatural assemblage of genera. 
The sub-family Synthemiinae, proposed by Needham and 
Hart* but not defined, by inference includes the second legion 
or group defined by de Selys and later authors, but only the 
Illinois genera of this legion are mentioned. Later Needhamy 
*Bull. Til. St. Lab. Nat. Hist. Vol. VI, Sept., 1901, p. 5. 
+ Aquatic Insects in the Adirondacks, N. Y. St. Mus. Bull. 47, Sept., 
IQ0I, p. 479. 
